🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.5 AU - 0.58 AU

Year: 260 Days

Day: 37.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.2

Radius: 11.7

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.87 AU - 0.93 AU

Year: 560 Days

Day: 11.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,317,487 km

• M1: 145,559 km (0.067 R)
• M2: 573,409 km (0.109 R)
• M3: 1,261,409 km (0.11 R)
• M4: 1,634,955 km (0.067 R)
• M5: 2,169,468 km (0.101 R)
• M6: 2,634,867 km (0.106 R)
• M7: 3,099,219 km (0.076 R)
• M8: 3,820,580 km (0.112 R)
• M9: 5,015,269 km (0.06 R)
• M10: 5,614,558 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.1

Radius: 12.9

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.1 AU - 1.5 AU

Year: 972 Days

Day: 9.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 67,317,487 km

• M1: 160,369 km (0.092 R)
• M2: 803,341 km (0.113 R)
• M3: 1,490,294 km (0.063 R)
• M4: 2,884,696 km (0.097 R)
• M5: 4,003,089 km (0.05 R)
• M6: 4,426,003 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160.1

Radius: 11.5

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.78 AU - 2.94 AU

Year: 2378 Days

Day: 8.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,317,487 km

• M1: 143,016 km (0.092 R)
• M2: 563,685 km (0.099 R)
• M3: 925,712 km (0.115 R)
• M4: 1,312,273 km (0.12 R)
• M5: 1,744,012 km (0.109 R)
• M6: 3,076,630 km (0.112 R)
• M7: 3,740,096 km (0.069 R)
• M8: 4,250,823 km (0.107 R)
• M9: 6,404,135 km (0.098 R)
• M10: 8,659,922 km (0.081 R)
• M11: 9,057,702 km (0.103 R)
• M12: 9,467,750 km (0.116 R)
• M13: 9,920,882 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 738.2

Radius: 9.9

Gravity: 7.53 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.45 AU - 3.31 AU

Year: 3206 Days

Day: 10.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 67,317,487 km

• M1: 123,269 km (0.057 R)
• M2: 443,707 km (0.097 R)
• M3: 1,047,185 km (0.079 R)
• M4: 1,771,538 km (0.075 R)
• M5: 2,440,240 km (0.105 R)
• M6: 3,054,639 km (0.105 R)
• M7: 3,551,453 km (0.078 R)
• M8: 4,101,375 km (0.095 R)
• M9: 4,476,267 km (0.111 R)
• M10: 4,922,219 km (0.081 R)
• M11: 6,153,858 km (0.077 R)
• M12: 7,876,627 km (0.087 R)
• M13: 9,067,426 km (0.072 R)
• M14: 10,135,106 km (0.077 R)
• M15: 11,846,955 km (0.111 R)
• M16: 12,202,100 km (0.112 R)
• M17: 14,687,519 km (0.069 R)
• M18: 15,097,716 km (0.052 R)
• M19: 16,649,345 km (0.073 R)
• M20: 17,378,336 km (0.071 R)
• M21: 20,004,377 km (0.093 R)
• M22: 21,411,794 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.6

Radius: 11.4

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 2.96 AU - 3.58 AU

Year: 3879 Days

Day: 5.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 87.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 67,317,487 km

• M1: 141,819 km (0.095 R)
• M2: 509,530 km (0.076 R)
• M3: 936,483 km (0.104 R)
• M4: 2,152,115 km (0.06 R)
• M5: 2,783,717 km (0.073 R)
• M6: 3,258,990 km (0.098 R)
• M7: 3,689,383 km (0.108 R)
• M8: 6,615,816 km (0.116 R)
• M9: 7,063,263 km (0.104 R)
• M10: 7,952,473 km (0.102 R)
• M11: 9,022,547 km (0.116 R)
• M12: 9,686,462 km (0.062 R)
• M13: 11,070,542 km (0.11 R)
• M14: 11,961,995 km (0.12 R)
• M15: 13,984,259 km (0.101 R)
• M16: 15,695,958 km (0.113 R)
• M17: 17,430,845 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.9

Radius: 13.1

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.86 AU - 4.52 AU

Year: 4650 Days

Day: 9.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,317,487 km

• M1: 165,156 km (0.068 R)
• M2: 650,751 km (0.119 R)
• M3: 1,564,644 km (0.1 R)
• M4: 3,787,220 km (0.1 R)
• M5: 6,314,676 km (0.06 R)
• M6: 8,974,376 km (0.036 R)
• M7: 14,179,185 km (0.106 R)
• M8: 17,032,316 km (0.098 R)
• M9: 19,587,148 km (0.048 R)
• M10: 20,677,268 km (0.081 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.6

Radius: 10

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 3.87 AU - 4.17 AU

Year: 5287 Days

Day: 10.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 67,317,487 km

• M1: 124,465 km (0.103 R)
• M2: 445,054 km (0.096 R)
• M3: 777,011 km (0.05 R)
• M4: 1,262,307 km (0.097 R)
• M5: 1,943,127 km (0.104 R)
• M6: 2,926,882 km (0.078 R)
• M7: 3,616,379 km (0.077 R)
• M8: 4,141,617 km (0.1 R)
• M9: 5,402,129 km (0.115 R)
• M10: 5,996,930 km (0.12 R)
• M11: 6,374,365 km (0.098 R)
• M12: 6,734,148 km (0.084 R)
• M13: 7,970,575 km (0.063 R)
• M14: 9,990,894 km (0.111 R)
• M15: 12,891,447 km (0.09 R)
• M16: 13,309,423 km (0.073 R)
• M17: 14,172,603 km (0.057 R)
• M18: 15,130,179 km (0.056 R)
• M19: 16,986,389 km (0.106 R)
• M20: 17,299,348 km (0.082 R)
• M21: 21,801,197 km (0.086 R)
• M22: 23,770,653 km (0.057 R)
• M23: 29,208,236 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 864.4

Radius: 3.3

Gravity: 79.38 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 7.74 AU - 8.24 AU

Year: 14816 Days

Day: 19.8 Hours

Environment

Temp: -233 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 67,317,487 km

• M1: 75,547 km (0.074 R)
• M2: 241,900 km (0.113 R)
• M3: 439,967 km (0.089 R)
• M4: 859,589 km (0.087 R)
• M5: 1,054,815 km (0.119 R)
• M6: 1,533,827 km (0.055 R)
• M7: 2,350,482 km (0.092 R)
• M8: 2,803,614 km (0.089 R)
• M9: 2,925,536 km (0.047 R)
• M10: 3,206,182 km (0.114 R)
• M11: 3,476,505 km (0.088 R)
• M12: 4,001,145 km (0.093 R)
• M13: 4,124,563 km (0.119 R)
• M14: 4,411,641 km (0.117 R)
• M15: 5,278,860 km (0.093 R)
• M16: 6,589,487 km (0.053 R)
• M17: 10,517,329 km (0.11 R)
• M18: 10,693,555 km (0.104 R)
• M19: 12,304,425 km (0.106 R)
• M20: 13,303,739 km (0.088 R)
• M21: 15,236,543 km (0.078 R)
• M22: 15,843,312 km (0.084 R)
• M23: 16,703,649 km (0.073 R)
• M24: 17,842,987 km (0.091 R)
• M25: 18,773,785 km (0.111 R)
• M26: 18,946,421 km (0.09 R)
• M27: 22,141,981 km (0.057 R)
• M28: 24,632,337 km (0.088 R)
• M29: 30,042,544 km (0.104 R)
• M30: 30,874,757 km (0.057 R)
• M31: 35,398,746 km (0.113 R)
• M32: 36,193,260 km (0.113 R)
• M33: 37,407,247 km (0.112 R)
• M34: 43,281,955 km (0.109 R)
• M35: 44,802,618 km (0.072 R)
• M36: 47,309,130 km (0.108 R)
• M37: 47,628,970 km (0.097 R)
• M38: 48,111,274 km (0.084 R)
• M39: 48,759,332 km (0.103 R)
• M40: 64,139,638 km (0.051 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 463 - 19,059 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit